Coal-breaker construction.



1. L. HILLER. COAL BREAKERCONSTBUC-TION.

APPLlCATlON FIL ED APR. 9. 1915.

Patented Jan. 22,1918.

1 Original application filed May 1, 1911, Serial 1 UNITED STATES PATENT OFFICE.

JosErH 13. Emma, or MAT'IAPOISETT, MASSACHUSETTS, nssrenon r PENNSYLVANIA CRUSHEB'COMPANY, or NEW YORK, N. Y.', A CORPORATION oE NEW YORK.

coat-BREAKER oons'rnucrion.

filed May 1, 1911, Serial NO.'624:,291,) of

which the following is a specification.

One object of this invention is to provide a rotary coal breaker with a novel form and arrangement of lifting. and screening shelf particularly designed to reduce the power required for operating and also to lessen the time necessary for a given body of material, such as coal in lump form, to be brought to I a definite finen'ess;it being also desired that the construction-shall be such as to permit of the shelf being adjusted. to vary the distance of one of its edges from the adjacent surface of the drum in order to suit it for the sizes.

These objects and other advantageous ends- I secure as hereinafter set forth, ref

erence being had to the'accompanying drawpassa'ge of pieces of different Kings, in which,

Figure -1 is a fragmentary transverse section of a portion of a rotary coal breakerdrum showing my invention as applied thereto Fig. 2- is a fragmentary longitudinal section of a part of the drum shown in Fig. 1, illustrating imperfo'rate plows in placeof the perforated structures shown in Fig. 1, and,

Fig.3 is a section on an enlarged scale' further illustrating the construction of one of the features of the invention.

In the above drawings I have illustrated a rotary drum 1 formed of perforated sheet or plate metal supported on a frame formed by end structures including radiating arms 2 and 3 rigidly connected attheir outer ex- .tremities by longitudinally extending memhers 4 which serve to directly support said perforated cylinder Or drum. The breaker is driven by. power applied through an an-" nular gear 5 fixed to" one end of the frame and at intervals within the drum I provide lifting shelves, of which' one is illustrated at 6, in the form of flat perforated plates rigidly supported by a suitable number of Specification of Letters latent.

No. 624,291. Serial No. 20,275.

each of the shelves 6. As

Patented Jan. 22, 1918.

Divided and this. application filed April 9, 1915.

-angle brackets 7 so that they extend inwardly from the drum surface in substantially radial planes. Said brackets are usually made so that their plate engaging faces are substantially at right angles to the faces designed to engage the. drum struomm 1, and 'as shown in Fig. 3, the bolts 8 employed to hold these brackets in place may be-utilized to also clamp the perforated plate forming the drum 1, to the frame members. Each of the plates constituting the shelves 6 is held to its brackets by bolts 9 which extend through radially elongated slots therein so as to permit of the adjustment of the plate toward or from the drum surface ;-it being my intention to operate the machine with the adjacent edge of the shelf spaced away from said surface as shown n Figs. 1 and 3.

- In addition to the radial shelves 6 I may also enploy any desirednumber of perforated shelves or plows 10 mounted on sup- Ing frame or drum structurethat said shelves .extend in a plane at an angle to the plane of the'adjacent radial plate or plates to raise material, gives it a movement longitudinally of the drum. In the case shown in Fig. 2 I employ a number of inwardly projecting plates or. plows 12 in place of the incllned plates 10, and instead of slotting the brackets 7 to permit of adjustment of .tl'le plates 6, in this case I provide slots in said plate-for the bolts 9 so that as before it ispossible to vary the distance between the drumand the adjacent edge of said shelf. Or plate. 1 i Under operating conditions the drum is supplied with a definite quantity of coal or other material to be broken and is rotated at a suitable speed so that this material, which is in lump form, is carried up b one of the shelves, for example, rises owingto the rotation of the drum, the fine material. carriedup by it passes to a perforations shelf, thereafter passing out of the drum through the perforations thereof. U1tigreater or less extentethrongli its as well as through the space between it and the adJtlCIlt edge of the porting brackets 11 so fixed to the supportmetal the material carried up by the shelf the upper part of the drum and in falling rialw ischarged therefrom when it reaches to the bottom of-the breaker is broken into small ElBCGS, it being obvious that the mateshelves and the drum is quickly discharged through the perforations thereof.

With the construction shown the amount of power required to drive the, drum is materially reduced by the use of my invention since as pointed out the fine, material is rapidly carried up and permitted to escape through the perforations of the shelves aswell as throughthe elongated openings between said shelves and the drum surface.

"By inclining the-shelf as shown in Fig.

a movement longitudinally of the drum is imparted to the material acted upon as it is 'rais ed,.whjich materially facilitates the quick separation-of the line from the coarse mate rial especiallywhenused in connection'with shelves of the type shown at 6; and likewise cuts down the power'necesfsary'to break andr; screen a given mass of material. fMoreover any hard unbreakable moved to one end of t e drum where they are discharged by a suitable device.

ich escapes between theedges of the ieces are ultimately 2. The combination ofaperforated-screen drum; a number'oif. series ofradially slotted brackets-extending. inwardly from the inner face thereof with flat perforated plates rigidly held to the brackets 'ofsaid series and adjustable with their outer-edges spaced' away from the" adjacent surface of the drum.

3. The combination of a screen drum; a

series of shelves. projecting radially inward therein and extending longitudinally of the" drum; with a second series of shelves also projecting. inwardly in the drum but in clined to the lines of the shelves of the othe series, the shelves'of both series being rigidly fixed in positions with their edges spaced away from the drum surface to which they are adjacent.

JOSEPH L. HILLER. 

